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Direct and Inverse Proportion — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSDirect and Inverse Proportion1 Mark
Question
Simple interest on a given sum and the rate of interest.
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Answer

Simple interest on a given sum & the rate of interest are directly proportional to each other. e.g., Let $P = Rs.1000, R = 10\%, T = 1\ yr.$
$\text{SI}=\frac {\text {P} \times R \times T}{100}=\frac{1000\times20\times1}{100}=\text{Rs.200}$

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